Graco GC-1387J User Manual
Operation
Formula Gun GC-1387J
ENG
Low emission internal-mix dispense gun for use with polyester resin and gel coat.
For professional use only.
Maximum fluid working pressure:
2000 psi (14 MPa, 138 bar)
Maximum air pressure:
100 psi (0.7 MPa, 7 bar)
Important Safety Instructions
Read all warnings and instructions in
this manual. Save these instructions.
Contents
Warnings .......................................................... 3
Important Safety Information ......................... 5
Grounding ........................................................ 6
Set-Up ............................................................... 7
Parts .................................................................9
Pressure Relief Procedure ........................... 14
Maintenance ................................................... 15
Accessories ...................................................18
Graco Ohio Standard Warranty .................... 28
Graco Information ......................................... 28
2 GC-1387H
Warnings
tiple times to ensure it is thoroughly clean.
compatibility.
ISO on the B side.
side. Polyureas often have amines on the B (resin)
side.
WARNING
SPLATTER HAZARD
Hot or toxic fluid can cause serious injury if splashed in the eyes or on skin. During blow off of platen,
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment.
The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-
specic risk. Refer back to these warnings. Additional, product-specic warnings may be found throughout the
body of this manual where applicable.
• See Important Safety Information - MEKP, Polyester Resins and Gel-Coats and Spraying and Lamination
Operations section of this manual.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help
prevent re and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic
drop cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when ammable
fumes are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun rmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use
equipment until you identify and correct the problem.
• Keep a working re extinguisher in the work area.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the
operating area of the equipment to help protect you from serious injury, including eye injury,
inhalation of toxic fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the uid and solvent manufacturer
• Gloves
• Hearing protection
WARNING
TOXIC FLUID OR FUMES HAZARD
Toxic uids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s to know the specic hazards of the uids you are using.
• Store hazardous uid in approved containers, and dispose of it according to applicable
guidelines.
• Always wear impervious gloves when spraying or cleaning equipment.
3GC-1387H
Warnings
WARNING
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
WARNING
SKIN INJECTION HAZARD - Basic
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just
a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Do not spray without tip guard and trigger guard installed.
WARNING
SKIN INJECTION HAZARD
High-pressure uid from gun, hose leaks, or ruptured components will pierce skin. This may look
like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the dispense outlet.
• Do not stop or deect leaks with your hand, body, glove, or rag.
• Engage trigger lock when not spraying.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
MOVING PARTS HAZARD
Moving parts can pinch or amputate ngers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure in this manual. Disconnect power or air
supply.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the inuence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use uids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read uid and solvent manufacturer’s warnings. For complete
information about your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from trafc areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
uids containing such solvents in pressurized aluminum equipment. Such use can cause serious
chemical reaction and equipment rupture, and result in death, serious injury, and property damage.
4 GC-1387H
Important Safety Information
Isocyanate Conditions
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been contam-
inated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.
Methyl Ethyl Ketone Peroxide (MEKP)
MEKP is among the more hazardous materials
found in commercial channels. Proper handling
of the “unstable (reactive)” chemicals presents a
denite challenge to the plastics industry. The
highly reactive property which makes MEKP
valuable to the plastics industry in producing the
curing reaction of polyester resins and gel-coats
also produces the hazards which require great care
and caution in its storage, transportation, handling,
processing and disposal.
Workers must be thoroughly informed of the hazards
that may result from improper handling of MEKP,
especially in regards to contamination and heat.
They must be thoroughly instructed regarding the
proper action to be taken in the storage, use and
disposal of MEKP and other hazardous materials
used in the laminating operation.
MEKP is ammable and potentially explosive,
as well as potentially damaging to the eyes and
skin.
Read material manufacturer’s warnings and
material MSDS to know specic hazards and
precautions related to MEKP.
Contaminated MEKP can become explosive.
Prevent contamination of MEKP with other materi-
als, which includes, but is not limited to polyester
overspray, polymerization accelerators and promot-
ers, and non-stainless metals. Even small amounts
of contaminates can make MEKP explosive. This re-
action may start slowly, and gradually build-up heat,
which can accelerate until re or an explosion result.
This process can take from seconds to days.
Heat applied to MEKP, or heat build-up from con-
tamination reactions can cause it to reach what is
called its Self-Accelerating Decompisition Tempera-
ture (SADT), which can cause re or explosion.
Spills should be promptly removed, so no residues
remain. Spillage can heat up to the point of self-
ignition. Dispose in accordance with manufacture’s
recommendation.
Store MEKP in a cool, dry and well-ventilated area
in the original containers away from direct sunlight
and away from other chemicals. It is strongly recommended that the storage temperature remain below
86° F (30° C). Heat will increase the potential for ex-
plosive decomposition. Refer to NFPA 432.
Keep MEKP away from heat, sparks and open
ames.
Current catalysts are premixed and do not require
any diluents. GlasCraft strongly recommends that diluents not be used. Diluants add to the possibility of contaminates entering the catalyst system. Never dilute
MEKP with acetone or any solvent since this can pro-
duce an extremely shock-sensitive compound which
can explode.
Use only original equipment or equivalent parts
from GlasCraft in the catalyst system (i.e.: hoses, t-
tings, etc.) because a hazardous chemical reaction
may result between substituted parts and MEKP.
To prevent contact with MEKP, appropriate personal
protective equipment, including chemically impermeable gloves, boots, aprons and goggles are required
for everyone in the work area.
Polyester Resins and Gel-Coats
Spraying materials containing polyester resin and
gel-coats creates potentially harmful mist, vapors and
atomized particulates. Prevent inhalation by providing
sufcient ventilation and the use of respirators in the
work area.
Read the material manufacturer’s warnings and ma-
terial MSDS to know specic hazards and precautions
related to polyester resins and gel-coats.
To prevent contact with polyester resins and gelcoats, appropriate personal protective equipment,
including chemically impermeable gloves, boots,
aprons and goggles are required for everyone in the
work area.
Spraying and Lamination Operations
Remove all accumulations of overspray, FRP sand-
ings, etc. from the building as they occur. If this waste
is allowed to build up, spillage of catalyst is more likely
to start a re.
If cleaning solvents are required, read material
manufacture’s warnings and material MSDS to know
specic hazards and precautions. (GlasCraft recom-
mends that clean-up solvents be nonammable.)
GlasCraft recommends that you consult OSHA
Sections 1910.94, 1910.106, 1910.107 and NFPA
No. 33, Chapter 16,17, and NFPA No. 91 for further
guidance.
5GC-1387H
Grounding
Isocyanate Conditions
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been contam-
inated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.
This equipment needs to be grounded.
Ground the dispense gun through connection to a
GlasCraft approved grounded uid supply hose.
Check your local electrical code and related manuals
for detailed grounding instructions of all equipment in
the work area.
A grounding wire and clamp are provided,
assembly p/n 17440-00 with all FRP equipment.
6 GC-1387H
Set-Up
Hose Attachment
1. Push in and rotate the trigger lock to stop the trigger
from being activated.
2. Attach the (black p/n 21694-25) material hose to
the material inlet tting on the back of the gun.
5. Attach the (Clear) trigger air tubing to the
trigger air inlet tting on the back of the gun.
6. If the optional berglass roving chopper is being used,
attach the “red” chopper air line to the chopper air
inlet tting on the back of the gun.
3. Attach the (yellow p/n 236) solvent line to the solvent
inlet tting on the back of the gun.
4. Attach the (stainless steel p/n 20190-00) catalyst
hose to the catalyst inlet tting on the back of the
gun.
7. Mixing element assembly
A - Insert mixing element,
p/n: 20634-01, straight
into the gun front housing,
p/n: 23760-00
B - Place retaining nut, p/n: 23002-00
along with spray tip, p/n: 23005-XX
and spray tip spacer, p/n: 23046-00
onto gun housing.
7GC-1387H
Set-Up
Isocyanate Conditions
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been contam-
inated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.
Isocyanate Conditions
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been contam-
inated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.
Isocyanate Conditions
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO lube pump reservoir (if installed) filled
with Graco Throat Seal Liquid (TSL), Part 206995.
The lubricant creates a barrier between the ISO and
the atmosphere.
• Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Never use solvent on one side if it has been contam-
inated from the other side.
• Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Keep Components A and
B Separate
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying materials containing isocyanates creates
potentially harmful mists, vapors, and atomized partic-
ulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventila-
tion in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per-
sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
The amount of film formation and rate of crystalli-
zation varies depending on the blend of ISO, the
NOTICE
To prevent cross-contamination of the equipment’s
wetted parts, never interchange component A (isocy-
anate) and component B (resin) parts.
Overnight Shut Down Procedure
The following steps should be followed for overnight
shutdown:
1. The yellow air valve located where the air
enters the machine should be pushed to
the “OFF” (closed) position. To do this simply
push on the lever protruding out the side of
the valve. This will also cause all the system
air to bleed out of the system in a matter of a
few seconds thus making the system
incapable of operating.
Step 2 is a precautionary step and should be
followed whenever the emergency stop valve is
activated to the stop mode. Failure to do so will
damage regulators and components when
reactivating to the ON position.
2. Turn all system regulators to OFF (counter clockwise) position.
Verify that the Catalyst Pressure Relief Line and
the Resin Return Line are secured before relieving
catalyst and resin uid pressure.
3. Catalyst pressure in the Slave Pump can be
eliminated by rotating the yellow valve handle
on the Slave Pump 90 degrees to the “ON”
position.
The “ON” position the valve handle is parallel
(in line) with the valve body .
The “OFF” position the valve handle is
perpendicular (across) the valve body.
4. Resin pressure can be eliminated by rotating
the yellow handled valve on the bottom of
the uid lter 90 degrees. Place a container
under the bottom of the valve to catch any
resin that is ejected from the valve.
8 GC-1387H
Parts
23750-00 Formula Dispense Gun
Part
Number
23750-00 Formula Dispense Gun
23005-J5 Standard Spray Tip
Description
Repair Kits
Part
Number
23792-00 GUN AIR KIT
23793-00 GUN SEAL KIT
23732-00 GUN FLUID VALVE KIT
Description
9GC-1387H
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